The 10 Best Extra Long Cobalt Drill Bits (2022 reviews)

Compared with other bits in this category, the Bosch Extra Long Cobalt Drill Bit has a design with broader appeal. The bosch extra long cobalt drill bit works well for good quality, is good for abrasive materials, It is very good and has a great design. Rigid, thick web design adds stability to bits in tough applications. Moreover, this is inexpensive, is good for country of origin, it is very inexpensive and has an excellent design.

Above all, the bosch extra long cobalt drill bit comes with good bits, It is available in work length and has a round shank design.

Most customers agree that the bit looks like the steel is getting hot use a drop of cutting oil to keep it cool. And, they strongly agree that the bit has from 1/16 or 1/8 to 1/2, which is really good if you'll be doing some work at home. And, they strongly agree that the bit is used to manufacture the company 's products. Overall, buyers found this to be one of the best bits for daily purposes.

Customers say that getting a drill bits for stainless steel bolt and cobalt drill bits for cast iron, along with bit is useful.

Top Customer Quotes:

This allows for very good quality, It is very durable and has a split point design.
Withstands high-temperature applications for extended periods of time (up to 1,100 degreef).
Available at work length, full shank.
This works fine, is great for hard wood and it is straight.

Best For Popular Sizes: Irwin Tools Extra Long Cobalt Drill Bit

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Not everyone likes to purchase bits for their daily purpose, but the Irwin Tools Extra Long Cobalt Drill Bit would be an anomoly. The Irwin tools, extra long cobalt drill bit is best for a good deal and it is straight. Make sure this fits by entering your model number. Furthermore, the bit is simple and it is pretty good.

The bit works for popular sizes and it is used for overall length. Above all, the irwin tools extra long cobalt drill bit is made from industrial grade high-speed steel for increased durability.

Most customers agree that the bit is great for drilling into stainless. In addition, they strongly agree that the bit is great with 303 stainless steel. With no doubts, this bit passed the test and had very satisfied buyers eager to share their experience.

Customers discovered that getting a drill bits for hardened metal, along with bit is useful.

Why We Like This:

Lot of satisfied buyers.
New and hot releases.

RELATED: Best Long Hex Shank Drill Bits

Best For Brass: Amoolo Extra Long Cobalt Drill Bit

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The Amoolo Extra Long Cobalt Drill Bit is capable of outshining several other bits featured in this list in overall features for the price point. The amoolo extra long cobalt drill bit fits the majority of power drills currently on the market and comes with a portable plastic case for easy storage and organization. Make sure this fits by entering your model number. In addition, the bit is made of industry grade 6542 high speed steel, cobalt twist drill bits are harder than 4241/4341 hss used in other similar bits, ideal for heavy duty hole drilling.

Lastly, the amoolo extra long cobalt drill bit is lightweight, is useful and is important.

Most buyers quickly discovered that the bit came in an ingenious case which could be accessed quickly and closed securely so no bits fall out. In addition, they also found that the bit was good value for its money. Further, they also found that the tip of the bit " walked " a little more than some other self - starting bits.

Customers discovered that getting a long hex shank drill bit, with this bit made their life much easier.

Top Customer Quotes:

The price per bit is reasonable and they are getting the job done.
This is used for this same bus conversion project.
This comes with a storage case, a nice.
This comes in a convenient, labeled case too.

Best For Hard Steel: Hymnorq Extra Long Cobalt Drill Bit

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Best part: Hymnorq extra longcobalt drill bit costs comparatively little and it is available to ship in 24 hours. The Hymnorq Extra Long Cobalt Drill Bit is designed to be top notch and it has split points. The Manufacturer says: In most cases, our customers would get a much better result with these tips. In addition, this is best for mild steel and it is great for water.

Finally, the hymnorq extra long cobalt drill bit comes with great bits and it is very good.

Most customers found that the bit is constructed of PVC pipe. Also, a few strongly agree that the bit is good for cheap drill bits. And, a few also found that the first bit chomped perfect holes through a very hard 3/4 of oak. Overall, buyers found this to be one of the best bits for daily purposes.

Few customers bought extra long twist drill bit, along with the bit.

Top Customer Quotes:

This is much faster, comes with good bits and it cuts well.
This works as described and it is good for moderate pressure.
This is used for softer materials like copper and aluminium, too.
This is great for 1/4” angle iron, must use cutting oil.

Best For Worth The Money: Mudder Extra Long Cobalt Drill Bit

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The mudder line of bits comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Mudder Extra Long Cobalt Drill Bit is small, please pay attention to using. Please pay attention to speed, pressure and heat control during drilling. The cutting edge of the drill bit is hardened and honed, with accurate cutting without shaking.

The bit makes for a great buy, is good for various fitness, It is good for overall length and has a creative twist design. In addition, the bit is suitable for hardened materials and hard metals, such as cast iron, high temperature alloy, hard plastics, stainless steel, titanium alloy, woods, etc., also for soft materials. Lastly, the mudder extralong cobalt drill bit is precise, It is highly recommended and has a great design.

"Drilled 3 clean holes through 1/4 inch of steel. " - says, one customer. To sum up, most buyers agree that the bit is functionally comfortable and no one questions it.

Customers found that buying a extra long twist drill bit, along with bit is useful.

Why We Like This:

This is suitable for lithium electric drill, hand electric drill, impact electric drill, etc.
One of the newcomers and featured product.

RELATED: Best Stubby Drill Bits

Best For Wood Pilot Holes: Drill America Extra Long Cobalt Drill Bit

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Next on the list, we've got yet another bit that manages to win our hearts. It's the drill American extra long cobaltdrill bit and it's widely considered as one of the most convenient bits you can buy. The drill American extra long cobalt drill bit is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools. Make sure this fits by entering your model number. In addition, it works great and it is used for overall length.

Lastly, the drill American extra longcobalt drillbit is manufactured to national aerospace standard 907.

Almost all customers opine that the bit is great for wood pilot holes.

Customers say that buying a really long drill bit and long drill bits for steel, along with bit is useful.

Why We Like This:

The 135° split point tip prevents the drill from walking.
This is very good, is effective and it has split points.
Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium.
Round shanks allow use of a wide variety of tool holding systems.

Best For First Class: Drill America Good Bit

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Drill America offers a variety of bits for personal choice and yet maintains quality in all the variants. The drill American good bit is manufactured to national aerospace standard 907. Make sure this fits by entering your model number. In addition, it is good for a reasonable cost and it is perfect for first class.

The bit has a split point tip, has nice bits and it is good for overall length. And, it is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools. Lastly, the drill American bit would be perfect with a nice length and it has split point.

"Check bit(s) size(s) when you get them. " - says, one customer. In short, for almost all customers, the bit was most suitable.

Customers say that getting a extra long drill bits for steel and aircraft drill bit, along with bit is useful.

Why We Like This:

The 135° split point tip prevents the drill from walking.
Round shanks allow use of a wide variety of tool holding systems.
This is very happy and it is pretty good.
This is self-centering and reduces thrust.

Best For Overall Length: Max-Craft Drill Bit

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Here, we review the bit that manages to win our hearts. It's the Max-Craft Drill Bit and it's widely considered as one of the best bits you can buy. The max-craft drill bit is used for drilling deep holes in metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium. Make sure this fits by entering your model number. The premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.

Above all, the max-craft drill bit has a split point angle and it has split point.

Almost all buyers opine that the bit is great for predrilling pocket holes to avoid splitting and so many other uses. Also, they strongly agree that the bit is a good value but the first one is usually breaks relatively fast. To sum up, at the price, they believe that they got a steal of a deal with it.

Customers also discovered that its helpful to get a long drill bits for steel, along with this bit.

Why We Like This:

✔️ cobalt drill bit dimension:5/32"(diameter) x 2"( flute length) x 6"(overall length).
This is good for cobalt drill bit dimension and it is used for the overall length.
New and hot releases.

Best For High Quality: Max-Craft Extra Long Cobalt Drill Bit

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate bit. The Max-Craft Extra Long Cobalt Drill Bit is exactly that - it's a simple bit that hits all the right notes. The max-craft extralong cobalt drill bit works very well and it is useful. The gold oxide ember finished surface treatment strongthen the hardness of the drillbit body to ensure a long drilling life and better drilling performance. The premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.

Most importantly, the max-craft extra long cobaltdrill bit has a split point, comes with good bits and it is great for center punch.

Overall, many customers have used the bit for more than a few months without any complaints, and it shows no sign of giving up.

Few customers got long cobalt drill bit and pointed drill bit, along with the bit.

Why We Like This:

✔️ cobalt drill bit dimension:1/8"(diameter) x 1-5/8"( flute length) x 12"(overall length).
This is good for cobalt drill bit dimension and it is good for the overall length.
This is great for high quality and it has a split point angle.

Best For Easy Storage: Comoware Extra Long Cobalt Drill Bit

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The Comoware Extra Long Cobalt Drill Bit gives the top-tier bit a run for their money by offering flagship specs at a much more affordable price. The comoware extra long cobalt drill bit is stronger, is ideal for various sizes, It is easy to carry and has a twist design. Make sure this fits by entering your model number. Also, the bit is designed for slow speed, It is made with tool steel and has an excellent design.

The bit is intuitive, comes with a decent case, it is reliable and has a nice design. Moreover, the bit allows for great product, is used for mild steel, it is professional and has a round shank design. Above all, the comoware extra long cobalt drill bit includes the drill bit holder with size index for easy storage and organizing.

Almost all customers opine that the bit is a safe bet that they are made in China. Further, they strongly agree that the bit will hold up to a lot of use. And, they strongly agree that the bit is hard to know for sure.

Customers also discovered that its wise to get a _astro_ hyper step drill bit, along with this bit.

Top Customer Quotes:

This is good for general purpose use.
This is designed for practical use and is eye-catchingly colorful enough to notice.
This comes with a nice metal case to hold the individual bits.
This will not work with an impact driver, though.